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Liu X, Rong X, Jiang P, Yang J, Li H, Yang Y, Deng X, Xie G, Luo G. Biodiversity and core microbiota of key-stone ecological clusters regulate compost maturity during cow-dung-driven composting. Environ Res 2024; 245:118034. [PMID: 38147920 DOI: 10.1016/j.envres.2023.118034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/11/2023] [Accepted: 12/22/2023] [Indexed: 12/28/2023]
Abstract
The primary objectives of this study were to explore the community-level succession of bacteria, fungi, and protists during cow-dung-driven composting and to elucidate the contribution of the biodiversity and core microbiota of key-stone microbial clusters on compost maturity. Herein, we used high-throughput sequencing, polytrophic ecological networks, and statistical models to visualize our hypothesis. The results showed significant differences in the richness, phylogenetic diversity, and community composition of bacteria, fungi, and eukaryotes at different composting stages. The ASV191 (Sphingobacterium), ASV2243 (Galibacter), ASV206 (Galibacter), and ASV62 (Firmicutes) were the core microbiota of key-stone bacterial clusters relating to compost maturity; And the ASV356 (Chytridiomycota), ASV470 (Basidiomycota), and ASV299 (Ciliophora) were the core microbiota of key-stone eukaryotic clusters relating to compost maturity based on the data of this study. Compared with the fungal taxa, the biodiversity and core microbiota of key-stone bacterial and eukaryotic clusters contributed more to compost maturity and could largely predict the change in the compost maturity. Structural equation modeling revealed that the biodiversity of total microbial communities and the biodiversity and core microbiota of the key-stone microbial clusters in the compost directly and indirectly regulated compost maturity by influencing nutrient availability (e.g., NH4+-N and NO3--N), hemicellulose, humic acid content, and fulvic acid content, respectively. These results contribute to our understanding of the biodiversity and core microbiota of key-stone microbial clusters in compost to improve the performance and efficiency of cow-dung-driven composting.
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Affiliation(s)
- Xin Liu
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Xiangmin Rong
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Pan Jiang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Junyan Yang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China; Hunan Wodi Ecological Fertilizer Co. Ltd, Xiangtan, 411213, China
| | - Han Li
- Hunan Wodi Ecological Fertilizer Co. Ltd, Xiangtan, 411213, China
| | - Yong Yang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Xingxiang Deng
- Hunan Wodi Ecological Fertilizer Co. Ltd, Xiangtan, 411213, China
| | - Guixian Xie
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Gongwen Luo
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China.
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